(19)

(11)

EP 3 574 136 A1

(12)

(43) Date of publication: 04.12.2019 Bulletin 2019/49 (21) Application number: 18705961.3 (22) Date of filing: 30.01.2018

(51) International Patent Classification (IPC):  D01F 2/00(2006.01) C08J 5/18(2006.01) D01F 13/02(2006.01) B29C 47/00(2006.01) (86) International application number: PCT/FI2018/050070 (87) International publication number: WO 2018/138416 (02.08.2018 Gazette 2018/31)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA MD TN (30) Priority: 30.01.2017 FI 20175078 (71) Applicants: Aalto University Foundation sr 00076 Aalto (FI) Helsingin Yliopisto 00014 Helsingin yliopisto (FI)	(72) Inventors: SIXTA, Herbert 00076 Aalto (FI) HUMMEL, Michael 00076 Aalto (FI) LE BOULCH, Kadvaël 00076 Aalto (FI) KILPELÄINEN A., Ilkka 00014 Helsinki (FI) KING, Alistair W. T. 00014 Helsinki (FI) HELMINEN K. J., Jussi 00014 Helsinki (FI) HELLSTÉN, Sanna 00076 Aalto (FI) (74) Representative: Seppo Laine Oy  Porkkalankatu 24 00180 Helsinki 00180 Helsinki (FI)